INSTRUCTOR GUIDE FOR TACTICAL EVACUATION CARE IN TCCC-MP 150603 1 Tactical Combat Casualty Care for Medical Personnel 03 June 2015 1. Tactical Combat Casualty Care for Medical Personnel 150603 Tactical Evacuation Care Tactical Evacuation Care The Tactical Evacuation phase of care is that phase in which casualties are moved from the hostile and austere tactical environment in which they were injured to a more secure location capable of providing advanced medical care. The term “Tactical Evacuation” includes both CASEVAC and MEDEVAC as we will discuss. This phase may represent the first opportunity to receive additional medical personnel and equipment beyond that provided in Tactical Field Care. OBJECTIVES DESCRIBE the differences between MEDEVAC and CASEVAC 2. DESCRIBE the differences between Tactical Field Care and Tactical Evacuation Care Read text DESCRIBE the additional assets that may be available for airway management and electronic monitoring OBJECTIVES 3. DISCUSS the indications for and administration of Tranexamic Acid during tactical evacuation DISCUSS the management of moderate/severe TBI during tactical evacuation Read text INSTRUCTOR GUIDE FOR TACTICAL EVACUATION CARE IN TCCC-MP 150603 2 Tactical Evacuation 4. Casualties need evacuation as soon as feasible after significant injuries. Evacuation asset may be a ground vehicle, aircraft, or boat. Evacuation time is highly variable – significant delays may be encountered. Tactical situation and hostile threat to evacuation platforms may differ markedly from one casualty scenario to another. The Tactical Evacuation phase allows for additional medical personnel and equipment to be used. Evacuation Terminology 5. MEDEVAC: evacuation using special dedicated medical assets marked with a Red Cross – MEDEVAC platforms are non-combatant assets CASEVAC: evacuation using non-medical platforms – May carry a Quick-Reaction force and provide close air support as well Tactical Evacuation (TACEVAC) – this term encompasses both types of evacuation above Casualty movement/evacuation may occur as a separate moving portion of the operation while the main assault force continues tactical operations or the casualties may be evacuated along with the main assault force as it exfiltrates from the main objective. Pre-mission planning should identify medical facilities and capabilities within the area of operations. Transport times to these facilities by various types of vehicles should also be identified. Planning for loading casualties onto mission vehicle assets is important. A single litter patient may occupy space within a tactical vehicle normally occupied by 4 uninjured combatants. Take this into account during planning. Any platform can be used to evacuate casualties. You must understand the capabilities and limitations of any vehicle you opt to utilize. MEDEVAC vehicles and aircraft are specifically configured for casualty care and designated with a Red Cross. These assets are generally minimally armed. They will often NOT evacuate casualties where there is a high threat of hostile fire. CASEVAC assets are combatant platforms – good firepower, good armor, no Red Cross, designed to go into the fight. You will need CASEVAC assets if you have to evacuate casualties from a tactical situation where the threat level is high. INSTRUCTOR GUIDE FOR TACTICAL EVACUATION CARE IN TCCC-MP 150603 3 Aircraft Evacuation Planning 6. Flying rules vary widely among different aircraft and units Consider: –Distances and altitudes involved –Day versus night –Passenger capacity –Hostile threat –Medical equipment –Medical personnel –Icing conditions In tactical situations where the threat of hostile fire is high, plan to use a CASEVAC asset. However, in general, if the tactical situation will allow for a MEDEVAC asset to be used, it’s best to use that asset and save the CASEVAC assets for other contingencies that may arise later. If you use a tactical CASEVAC asset, you may have to make plans to augment its medical capabilities. Plan to have extra medical personnel and equipment on the CASEVAC platform. Aircraft Evacuation Planning 7. • Ensure that your evacuation plan includes aircraft capable of flying the missions you need • Plan for primary, secondary, & tertiary options Always have a backup plan. Or two. KNOW the flying rules for all of your potential evacuation aircraft. CASEVAC vs. MEDEVAC: The Battle of the Ia Drang Valley 8. 1st Bn, 7th Cavalry in Vietnam Surrounded by 2000 NVA - heavy casualties Called for MEDEVAC Request refused because landing zone was not secure Eventual pickup by 229th Assault Helo Squadron after long delay Soldiers died because of this mistake Must get this part right Here’s an example of how preventable deaths can occur from evacuation delays if you don’t understand the difference between a CASEVAC and a MEDEVAC. Soldiers died because of this planning error. INSTRUCTOR GUIDE FOR TACTICAL EVACUATION CARE IN TCCC-MP 150603 4 Ground Vehicle Evacuation Ground evac typically took too long in Afghanistan. 9. • More prevalent in urban-centric operations in close proximity to a medical facility • Vehicles may be organic to the unit or designated MEDEVAC assets Tactical Evacuation Care 10. • TCCC guidelines for care are largely the same in TACEVAC as they are in Tactical Field Care. • There are some changes that reflect the additional medical equipment and personnel that may be present in the TEC setting. • This section will focus on those differences. Airway in TACEVAC 11. • Additional Options for Airway Management – Supraglottic airway – Endotracheal Intubation • Confirm ETT placement with CO2 monitoring • These airways are advanced skills not taught in the basic TCCC course Also, military vehicles are not designed for comfort. There is usually significant noise and vibration in cargo areas, and overland movement generally provides for an extremely rough ride, which may be hard on the casualty. The Tactical Evacuation phase may present the first opportunity within the tactical operation to bring additional medical equipment and personnel to bear. Additional medical personnel should arrive with the evacuation asset. This is important because: -The unit’s medic or corpsman may be among its casualties -The unit’s medic or corpsman may be dehydrated, hypothermic, or otherwise debilitated -The unit’s medic or corpsman may need to continue on the unit’s mission and not get on the evacuation platform -There may not have been a medic or corpsman at the casualty scene The Nasopharyngeal Airway adjunct was described in the Tactical Field Care section. Once a casualty has been secured aboard an evacuation platform, a wider variety of more definitive airway adjuncts and personnel trained to use them may be available, although the NPA should suffice for most patients. A number of supraglottic airways can be used in the Tactical Evacuation setting. They are easier and faster to insert than an ET tube, are less likely to harm the casualty if not correctly placed, and require less training and experience to use successfully. Endotracheal intubation, though, may still be a better airway option for certain patients. Don’t attempt advanced airways unless you have been trained on them and are proficient in their use. INSTRUCTOR GUIDE FOR TACTICAL EVACUATION CARE IN TCCC-MP 150603 5 Breathing in TACEVAC 12. Watch for tension pneumothorax as casualties with a chest wound ascend to the lower pressure at altitude. Pulse ox readings will become lower as casualty ascends unless supplemental oxygen is added. Chest tube placement may be considered if a casualty with suspected tension pneumo fails to respond to needle decompression Consider tension pneumothorax in casualties with penetrating chest injuries and progressive respiratory distress. Decompress with a needle thoracostomy. Although chest tubes may be considered by trained personnel in long or delayed evacuations, they are considerably more difficult and invasive procedures, and there is no evidence that they are more effective than needle decompression for relieving tension pneumothorax. Supplemental Oxygen in Tactical Evacuation Care 13. Most casualties do not need supplemental oxygen, but have oxygen available and use it for: – Casualties in shock – Low oxygen sat on pulse ox – Unconscious casualties – Casualties with TBI (maintain oxygen saturation > 90%) – Chest wound casualties Oxygen should be pre-positioned on evacuation assets. Oxygen generators or concentrators are preferred over compressed gas cylinders because of the reduced explosive hazard. 5. Tranexamic Acid (TXA) 14. If a casualty is anticipated to need significant blood transfusion (for example: presents with hemorrhagic shock, one or more major amputations, penetrating torso trauma, or evidence of severe bleeding) – Administer 1 gram of tranexamic acid (TXA) in 100 cc Normal Saline or Lactated Ringer’s as soon as possible but NOT later than 3 hours after injury. – Begin second infusion of 1 gm TXA after Hextend or other fluid treatment. If the casualty meets the criteria for treatment with TXA, and it has not already been given, then give the first dose in Tactical Evacuation Care. Note that TXA should not be initiated if more than three hours have passed since the casualty was injured. INSTRUCTOR GUIDE FOR TACTICAL EVACUATION CARE IN TCCC-MP 150603 6 TXA Administration – 2nd Dose 15. • Typically given after the casualty arrives at a Role II/Role III medical facility. • May be given in Tactical Evacuation Care if the first dose was given earlier, and fluid resuscitation has been completed before arrival at the medical facility. – Should NOT be given with Hextend or through an IV line with Hextend in it – Inject 1 gram of TXA into a 100-cc bag of normal saline or lactated Ringer’s – Infuse slowly over 10 minutes Tactical Evacuation Care Guidelines Remember that rapid IV push of TXA may cause hypotension. If there is a new-onset drop in BP during the infusion – SLOW DOWN the TXA infusion. Read text 6. Traumatic Brain Injury a. Casualties with moderate/severe TBI should be monitored for: 16. 1. Decreases in level of consciousness 2. Pupillary dilation 3. SBP should be >90 mmHg 4. O2 sat > 90 Continued… Unilateral pupillary dilitation accompanied by a decrease in the level of consciousness may indicate that intracranial pressure is rising and that cerebral herniation is imminent. Casualties with moderate/severe TBI should be watched closely for these signs. Hypotension and hypoxemia may worsen outcomes for casualties with moderate/severe TBI. These conditions should be watched for and prevented or corrected as quickly as possible. INSTRUCTOR GUIDE FOR TACTICAL EVACUATION CARE IN TCCC-MP 150603 7 Read text Hypothermia may result in coagulation defects that may be associated with increased mortality in trauma victims with moderate to severe brain injury. It, too, should be prevented or corrected as quickly as possible in these patients. Tactical Evacuation Care Guidelines 6. Traumatic Brain Injury a. Casualties with moderate/severe TBI should be monitored for: 17. 5. Hypothermia 6. PCO2 (If capnography is available, maintain between 35-40 mmHg) 7. Penetrating head trauma (if present, administer antibiotics) 8. Assume a spinal (neck) injury until cleared Continued… Hypercapnia (elevated level of CO2 in the blood) contributes to an increase in cerebral blood flow which in turn contributes to elevation of the intracranial pressure (ICP). Elevated ICP must be avoided as this may lead to cerebral herniation. It is important, then, to keep CO2 from rising in casualties with injured brains. On the other hand, hypocapnia leads to cerebral vasoconstriction and decreased cerebral blood flow, which can also be bad for the casualty in that it reduces the amount of oxygen supplied to the brain. It is important, then, to maintain normal CO2 levels in casualties with injured brains (unless signs of cerebral herniation appear – more on that just ahead). Capnography should be used to monitor the casualty’s end-tidal CO2 to make sure that respiration remains adequate to keep the blood level of CO2 in the normal range. With respect to wound infection, a penetrating injury to the brain is the same as a penetrating injury to any other tissue. Early administration of an antibiotic may help prevent infection. If an injury to the head is severe enough to cause brain injury, then there was enough energy involved to cause injury to the cervical spine as well. Therefore, in cases of moderate/severe TBI, cervical spine fracture should be presumed, and appropriate precautions taken, until the spine is cleared for injury. INSTRUCTOR GUIDE FOR TACTICAL EVACUATION CARE IN TCCC-MP 150603 8 Tactical Evacuation Care Guidelines 6. Traumatic Brain Injury 18. b. Unilateral pupillary dilation accompanied by a decreased level of consciousness may signify impending cerebral herniation; if these signs occur, take the following actions to decrease intracranial pressure: 1. Administer 250cc of 3% or 5% hypertonic saline bolus 2. Elevate the casualty’s head 30 degrees Read text Rising ICP may lead to cerebral herniation. When signs of herniation are present in a brain-injured casualty, rapid reduction is the ICP is needed. Hypertonic saline may help decrease ICP and improve cerebral perfusion pressure and brain tissue oxygen levels. Elevation of the casualty’s head may help reduce ICP. Continued… Tactical Evacuation Care Guidelines 6. Traumatic Brain Injury b. (Continued) 3) Hyperventilate the casualty a) Respiratory rate 20 b) Capnography should be used to maintain the end-tidal CO2 between 30-35 mmHg c) The highest concentration of oxygen (FIO2) possible should be used for hyperventilation 19. Continued… Read text Hyperventilation leads to reduced levels of CO2 in the blood that, in turn, can contribute to cerebral vasoconstriction and lowered ICP. Therefore, hyperventilation can be used as a temporary measure to lower ICP in brain-injured casualties exhibiting signs of cerebral herniation. If capnography is available, it should be used to monitor end-tidal CO2 levels. The target range for CO2 is slightly lower than normal. Hyperoxia also contributes to cerebral vasoconstriction that will reduce cerebral blood flow which may help reduce elevated ICP. However, because of the increased amount of oxygen carried by the blood when hyperoxic, it will improve cerebral tissue oxygenation even while reducing cerebral blood flow. If oxygen is available, the highest concentration that can be delivered should be delivered. Tactical Evacuation Care Guidelines Read text 6. Traumatic Brain Injury Notes: 20. - Do not hyperventilate unless signs of impending herniation are present. - Casualties may be hyperventilated with oxygen using the bag-valve-mask technique. The hypocarbia and cerebral vasoconstriction that result from hyperventilation may be harmful to a brain-injured casualty who is not herniating. These casualties need to maintain their cerebral perfusion. Accordingly, hyperventilation should only be used in casualties who display signs of cerebral herniation, and who need emergent reduction in ICP. INSTRUCTOR GUIDE FOR TACTICAL EVACUATION CARE IN TCCC-MP 150603 9 Hypothermia Prevention in TACEVAC Hypothermia Prevention in TACEVAC 21. Remember to keep the casualty on an insulated surface or get him/her on one as soon as possible. Apply the Ready-Heat Blanket from the Hypothermia Prevention and Management Kit (HPMK), to the casualty’s torso (not directly on the skin) and cover the casualty with the HeatReflective Shell (HRS). Remember to keep the casualty on an insulated surface or get him/her on one as soon as possible. Apply the Ready-Heat Blanket from the Hypothermia Prevention and Management Kit (HPMK), to the casualty’s torso (not directly on the skin) and cover the casualty with the Heat-Reflective Shell (HRS). Read text Hypothermia Prevention in TACEVAC Hypothermia Prevention in TACEVAC If an HRS is not available, the previously recommended combination of the Blizzard Survival Blanket and the Ready Heat blanket may also be used. 22. Use a portable fluid warmer capable of warming all IV fluids including blood products. If an HRS is not available, the previously recommended combination of the Blizzard Survival Blanket and the Ready Heat blanket may also be used. Use a portable fluid warmer capable of warming all IV fluids including blood products. Remember: Prevention of Hypothermia in Helicopters! 23. Read text • Cabin wind and altitude cold result in cold stress • Protection especially important for casualties in shock and burn casualties Imagine how cold these casualties are. It is always cold at altitude in helos, but much worse in winters. Medics and corpsmen in helicopters in winter – bring chemical hand warmers to maintain manual dexterity! INSTRUCTOR GUIDE FOR TACTICAL EVACUATION CARE IN TCCC-MP 150603 10 Tactical Evacuation Care Guidelines Tactical Evacuation Care Guidelines 18. CPR in TACEVAC Care 24. a. Casualties with torso trauma or polytrauma who have no pulse or respirations during TACEVAC should have bilateral needle decompression performed to ensure they do not have a tension pneumothorax. The procedure is the same as described in section 2 above. 18. CPR in TACEVAC Care a. Casualties with torso trauma or polytrauma who have no pulse or respirations during TACEVAC should have bilateral needle decompression performed to ensure they do not have a tension pneumothorax. The procedure is the same as described in section 2 above. As in Tactical Field Care, when a polytrauma or torso trauma victim loses signs of life during resuscitation, bilateral needle decompression of the chest should be performed, if feasible, to rule out tension pneumothorax. Tactical Evacuation Care Guidelines Tactical Evacuation Care Guidelines 18. CPR in TACEVAC Care 25. b. CPR may be attempted during this phase of care if the casualty does not have obviously fatal wounds and will be arriving at a facility with a surgical capability within a short period of time. CPR should not be done at the expense of compromising the mission or denying lifesaving care to other casualties. 18. CPR in TACEVAC Care b. CPR may be attempted during this phase of care if the casualty does not have obviously fatal wounds and will be arriving at a facility with a surgical capability within a short period of time. CPR should not be done at the expense of compromising the mission or denying lifesaving care to other casualties. TACEVAC CARE - Hoisting 26. • Rigid Litters Only When Hoisting! • Check and double-check rigging CPR may be considered during TACEVAC if it is tactically and practically feasible, and surgical care is not far away. Stokes or basket-type litters should be used for hoisting casualties into helos. Secure the casualty – check and double-check rigging. INSTRUCTOR GUIDE FOR TACTICAL EVACUATION CARE IN TCCC-MP 150603 11 27. Questions? TACEVAC Care for Wounded Hostile Combatants 28. • Principles of care are the same for all wounded combatants • Rules of Engagement may dictate evacuation process • Restrain and provide security • Remember that each hostile casualty represents a potential threat to the provider and the unit and take appropriate measures • They still want to kill you. We talked about this in TFC. Maintain proper prisoner handling procedures. Tactical Evacuation Care Summary of Key Points 29. • Evacuation time is highly variable • Thorough planning is key • Similar to Tactical Field Care guidelines but with some modifications Read text INSTRUCTOR GUIDE FOR TACTICAL EVACUATION CARE IN TCCC-MP 150603 12 Convoy IED Scenario 30. Recap from TFC The last medical interventions during TFC were: – Placed tourniquet on both bleeding stumps – Disarmed – Placed NPA – Established IV – Administered 1 gm TXA and I unit whole blood – IV antibiotics – Provided hypothermia prevention • Your helo has now arrived at the HLZ Read text OK – let’s go back to our scenario that we started in Care Under Fire. Your element was in a five-vehicle convoy moving through a small Iraqi village when a command-detonated IED exploded under the second vehicle. The person next to you sustained bilateral mid-thigh amputations. He had heavy arterial bleeding from the left stump, and the right stump was only mildly oozing blood. The care you rendered during Tactical Field Care is shown here. The time in flight to the hospital will be 30 minutes. Convoy IED Scenario 31. 32. What’s Next? • Casualty is now conscious but is confused • Reassess casualty for ABCs – NPA still in place – Tourniquets in place, no significant bleeding • Attach electronic monitoring to casualty – Heart rate 140; systolic BP 70 – O2 sat = 90% Convoy IED Scenario What’s next? • Supplemental Oxygen – Why? • Casualty is still in shock What’s next? • Continue fluid resuscitation with plasma and RBCs in a 1:1 ratio – Why? • Casualty is still in shock Read text Read text INSTRUCTOR GUIDE FOR TACTICAL EVACUATION CARE IN TCCC-MP 150603 13 Convoy IED Scenario 33. 34. What’s next? • Inspect and dress known wounds and search for additional wounds What’s next? • Try to Remove tourniquets and use hemostatics? –No –Why? THREE reasons: • Short transport time - less than 2 hours from application of tourniquets • No distal extremities to lose • Casualty is in shock Questions/Comments? Read text